Fuelwood is wood in the rough such as branches, twigs, logs,
chips, sawdust and pellets, used for energy generation.

Wood residues: Wood left behind in the forest after forest
harvesting, and wood by-products from wood processing, such as wood chips,
slabs, edgings, sawdust and shavings.

Wood pellets are small particles used for energy generation
made of dried, ground and pressed wood. Wood pellets are originally produced
from wood waste (such as sawdust and shavings), rather than whole logs, and thus
can be viewed as an integrated part of forest product manufacturing. The raw
material is dried, mechanically fractioned to size, and extruded under intense
pressure into pellets.